Add guide to create a proposal or investment

During a Participatory Budget, some users are getting confused and
creating a proposal instead of a budget investment. This intermediate
page should help them create investments

Adding a feature flag just in case other forks don’t need this feature
and setting seeds and dev_seeds for appropriate initial setup

spec/features/guides_spec.rb

@@ -0,0 +1,54 @@
+require 'rails_helper'
+
+feature 'Guide the user to create the correct resource' do
+
+  let(:user) { create(:user, :verified)}
+  let!(:budget) { create(:budget, :accepting) }
+
+  background do
+    Setting['feature.guides'] = true
+  end
+
+  after do
+    Setting['feature.guides'] = nil
+  end
+
+  scenario "Proposal" do
+    login_as(user)
+    visit proposals_path
+
+    click_link "Create a proposal"
+    click_link "I want to create a proposal"
+
+    expect(page).to have_current_path(new_proposal_path)
+  end
+
+  scenario "Budget Investment" do
+    login_as(user)
+    visit budgets_path
+
+    click_link "Create a budget investment"
+    click_link "I want to create a budget investment"
+
+    expect(page).to have_current_path(new_budget_investment_path(budget))
+  end
+
+  scenario "Feature deactivated" do
+    Setting['feature.guides'] = nil
+
+    login_as(user)
+
+    visit proposals_path
+    click_link "Create a proposal"
+
+    expect(page).to_not have_link "I want to create a proposal"
+    expect(page).to have_current_path(new_proposal_path)
+
+    visit budgets_path
+    click_link "Create a budget investment"
+
+    expect(page).to_not have_link "I want to create a new budget investment"
+    expect(page).to have_current_path(new_budget_investment_path(budget))
+  end
+
+end